package map_;

import list_.set_.HashSet_;

import java.util.HashMap;
import java.util.Map;
import java.util.Set;

/**
 * @description:
 * @Author yyp
 * @time
 */
public class MapFor_ {
    public static void main(String[] args) {
        Map map = new HashMap<>();
        map.put("a","1");
        map.put("b","2");
        Set key = map.keySet();
        for (Object o : key) {
            System.out.println(map.get(o));
        }
    }
}
